For the reaction: C4H10 + O2 = CO2 + H2O a.) what weight of C4H10 in grams is needed for 3.01 x 10^23 particles of O2?
b.) how many moles of CO2 will be produced from 5.0 moles of C4H10?
c.) what weight in grams of H2O will be produced from 12.5 mL of C4H10?
Density(p) of C4H10 = 0.506 g/mL

When a septic tank backs up a goes in to clean it out

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?